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Finding the Fourth Proportional to 85,349.16, 117,786.96 and 47,625.84

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Solution

The fourth proportional to 85,349.16, 117,786.96 and 47,625.84 is: 65,726.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,349.16 : 117,786.96 = 47,625.84 : x
  2. Step 2: Convert to fraction form
    85,349.16/117,786.96 = 47,625.84/x
  3. Step 3: Cross multiply
    85,349.16x = 117,786.96 × 47,625.84
  4. Step 4: Simplify right side
    85,349.16x = 5,609,702,911.05
  5. Step 5: Solve for x
    x = 5,609,702,911.05/85,349.16
  6. Step 6: Final answer
    x = 65,726.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.